Screen capture/NFL on FOX Packers president Mark Murphy acknowledged Wednesday that linebacker Clay Matthews may have needed a concussion evaluation in the NFC title game. PHOENIX – Although there weren’t many major rule changes passed during the annual NFL Meetings, one of the safety-related measures should be of some interest to Green Bay Packers fans who were baffled by linebacker Clay Matthews’ absence during the fourth quarter of the team’s Jan. 18 loss to the Seattle Seahawks in the NFC Championship Game.Matthews missed multiple series as the Packers’ 19-7 lead evaporated...